Research on Big Data Coding System Based on the Classification of Artificial Materials and Mechanical Equipment in Construction Engineering

By analyzing and comparing the current application status and advantages and disadvantages of domestic and foreign artificial material mechanical equipment classification coding systems,and conducting a comparative study of the existing coding system standards in different regions of the country,a coding data model suitable for big data research needs is proposed based on the current national standard for artificial material mechanical equipment classification coding.This model achieves a horizontal connection of characteristics and a vertical penetration of attribute values for construction materials and machinery through forward automatic coding calculation and reverse automatic decoding.This coding scheme and calculation model can also establish a database file for the coding and unit price of construction materials and machinery,forming a complete big data model for construction material coding unit prices.This provides foundational support for calculating and analyzing big data related to construction material unit prices,real-time information prices,market prices,and various comprehensive prices,thus contributing to the formation of cost-related big data.

Review of advanced road materials, structures, equipment, and detection technologies

As a vital and integral component of transportation infrastructure,pavement has a direct and tangible impact on socio-economic sustainability.In recent years,an influx of groundbreaking and state-of-the-art materials,structures,equipment,and detection technologies related to road engineering have continually and progressively emerged,reshaping the landscape of pavement systems.There is a pressing and growing need for a timely summarization of the current research status and a clear identification of future research directions in these advanced and evolving technologies.Therefore,Journal of Road Engineering has undertaken the significant initiative of introducing a comprehensive review paper with the overarching theme of“advanced road materials,structures,equipment,and detection technologies”.This extensive and insightful review meticulously gathers and synthesizes research findings from 39 distinguished scholars,all of whom are affiliated with 19 renowned universities or research institutions specializing in the diverse and multidimensional field of highway engineering.It covers the current state and anticipates future development directions in the four major and interconnected domains of road engineering:advanced road materials,advanced road structures and performance evaluation,advanced road construction equipment and technology,and advanced road detection and assessment technologies.

Modeling and Application of Maintenance Bill of Materials for Complex Equipment

In the industrial engineering, the maintenance and logistics support process is one of the key factors for the performance of equipment. Bill of materials( BOM) describes all the components in product and internal hierarchal relationships as a structured tree.In order to gain all required maintenance information for complex equipment which is complex,the modeling and the application of maintenance BOM are introduced in this paper. Because of the simple structure and the wide function,IDEF0 is presented to build the model of maintenance BOM. The modeling approach can gather the maintenance information conveniently based on other BOMs,and applications of maintenance BOM are widely,particularly,in maintenance and inventory management.

THE STATE COUNCIL DECIDES TO EXTEND THEIMPORT-DUTY EXEMPTION PERIOD FOR IMPORTS OF EQUIPMENT AND RAW MATERIALS BY ENTERPRISES WITH FOREIGN INVESTMENT

Recently the State Council decided to extend the period ofduty exemption for imports of equipment and raw materials by foreign-invested enterprises below US$30 million.In order to administrate import and export activities in light ofinternational practice and apply a unified, fair and standardizedpolicy toward import duties, the State Council, on December28,1995, decided to reform and adjust the policies of import duties by fairly significant reduction of the overall import tariff leveland elimination of preferences of import-duty exemption for mostimport items, which was also applicable to imports of equipmentand raw materials by foreign-invested enterprises set up since April1st, 1996. At the same time, with a view to maintaining the policycontinuity and relative stability, those enterprises established before March 31, 1996 were allowed an extended duty-exemptionperiod of one to two years for importation of equipment and rawmaterials(referring to construction materials, etc.) if such importswere below the value of their total investments, and for

Statistical data of Printing and Printing Equipment Industries and materials of China 2007

According to statistics of Printing and Printing Equipment Industries Association of China (PEIAC), the total output value of printing industry of China in 2007 reached 440 billion RMB , the total output value of printing equipment was

The personal protective equipment(PPE)based on individual combat:A systematic review and trend analysis

With the development of ordnance technology,the survival and safety of individual combatants in hightech warfare are under serious threat,and the Personal Protective Equipment(PPE),as an important guarantee to reduce casualties and maintain military combat effectiveness,is widely developed.This paper systematically reviewed various PPE based on individual combat through literature research and comprehensive discussion,and introduced in detail the latest application progress of PPE in terms of material and technology from three aspects:individual integrated protection system,traditional protection equipment,and intelligent protection equipment,respectively,and discussed in depth the functional improvement and optimization status brought by advanced technology for PPE,focusing on the achievements of individual equipment technology application.Finally,the problems and technical bottlenecks in the development of PPE were analyzed and summarized,and the development trend of PPE were pointed out.The results of the review will provide a forward-looking reference for the current development of individual PPE,and are important guidance for the design and technological innovation of advanced equipment based on the future technological battlefield.

Modeling and Simulation of Equipment Material Inventory Control Based on System Dynamics

The paper discusses how the inventory control of army equipment material runs sytematically under the two-level maintenance system,and establishes the inventory control model based on system dynamics.On the basis of modeling and simulation,the influence of different inventory upper limit on the whole system is studied,and the optimal inventory control mechanism under the model condition is foud.In addition,through the simulation of two replenishment strategies(s,S) and(T,s,S),the advantages and disadvantages and feasibility of each replenishment strategy are analyzed.

Development during last 30 years' reform and opening up in China's printing,printing equipment and material industries(Ⅰ)

As the industry of knowledge diffusion and civilization spreading, printing industry has been paid much attention by Party and Government.

Development during last 30 years' reform and opening up in China's printing,printing equipment and material industries (Ⅱ)

Ⅳ.Development of Printing Technology i.16 characters guideline and 28 characters guidefine directed the development of China’s printing technology Mr.Fan Muhan chaired 16 characters guideline in September,1982,which includes laserphototypesetting,

Development during last 30 years' reform and opening up in China's printing,printing equipment and material industries(Ⅲ)

(connected to the last month’s Print China) V.Regional Economy Regional imbalance appeared in development of China’s printing industry because of impact of gov-

DEVELOPMENT OF A MATERIALS RISK INFORMATION PLATFORM FOR A SAFE SOCIETY

A Materials Risk Information Platform is being developed under the cooperation of companies and academic societies with NIMS as project core. To combine safety and economy, which are sometimes contrary to each other, it is important to find an optimal solution using a new concept: risk based engineering. A 5-year project, the Materials Risk Information Platform, was started in 2001 in NIMS on the boilers of thermal power plants and the objectives of this project, research areas and its present state were outlined.

新增医疗服务价格项目管理政策回顾、实施难点及建议

比较各地新增医疗服务价格项目管理方案和主要做法,发现各地新增价格项目受理未区分难度、消耗和缓急,未明确绿色通道和加收情形;新增价格项目将耗材打包收费,难以客观体现技术劳务与设备物耗贡献;新增医疗服务价格项目要素不统一,影响区域间医院价格管理效果评价;新增价格项目成本测算表构成与计算口径各异,影响区域间数据的比较;价格政策执行情况检查结果与新增价格项目管理之间缺乏有效协同衔接。建议整合现行政策文件,出台国家新增医疗服务价格项目管理指导意见;公立医院要响应临床需求,加强新增价格项目申报、成本测算、执行情况管理,促进医疗技术创新发展和临床应用。

电力嗅觉传感原理与关键技术研究综述

仿生感知技术在电力设备状态监测与故障诊断领域已被广泛应用。结合微型气体传感器与智能算法的电力嗅觉技术,通过检测绝缘介质的特征分解气体,可以有效评估电力设备的故障类型和严重程度。因其成本低、体积小和集成度高的优势,电力嗅觉技术受到越来越多关注。因此,该文针对SF6气体绝缘设备、空气绝缘设备、变压器、电力电缆和储能电池的应用背景,梳理了当前电力嗅觉传感技术的研究现状。首先,总结了不同电力设备状态劣化的产气特性及内在机理,分析了特征分解气体的异同;之后,针对不同特征分解气体,总结了电力嗅觉敏感材料的研究进展与改进方向;然后,对比了陶瓷基底、柔性基底和硅基底的封装差异性,提出了电力嗅觉传感器件的芯片化、集成化发展方向;最后,讨论了基于特征工程和数据驱动的传感器信号处理算法,点明了边缘计算技术在电力嗅觉智能算法方面的应用潜力。该文对电力嗅觉传感原理与关键技术进行了详细归纳,强调了在气体分析方法、气敏材料开发、传感器制备技术和智能算法应用等方面的技术创新潜力,为电力设备的智能化发展提供了指导方向。

船舶与港口装备轻量化技术的研究现状与展望

水运是中国社会经济发展不可或缺、不可替代的交通方式。作为水运的主要载体和支点,船舶和港口的发展是水运贸易的重要支撑。面向新一代航运系统“绿色化、智能化、韧性化”的发展需求,轻量化技术已成为船舶与港口装备发展的重要方向。本文阐述了船舶与港口装备的构成、运行环境与结构特点;梳理了船舶与港口装备轻量化技术的发展现状,综合分析了材料轻量化与结构轻量化的技术特征及其应用现状;结合船舶与港口装备轻量化的发展需求,展望了船舶与港口装备轻量化技术的未来发展方向。

碳纤维复材结构网球器械接头的胶接强度性能表征

针对网球器械用碳纤维复合材料胶接连接,以超声机械振动方法胶接处理了网球器械用碳纤维复合材料,并测试分析了碳纤维复合材料胶接强度。结果表明,超声机械振动胶接工艺参数直接影响着网球器械用碳纤维复合材料的胶接强度,其振动时间为21s、振动压力为0.35 MPa、振动位置为27 mm、振幅为57μm时,网球器械用碳纤维复合材料胶接强度最高;相较于未超声机械振动对照组,基于正交实验优化的超声机械振动组的碳纤维复合材料胶接强度更高,且试样破坏后胶层截面位置缝隙非常小,胶接强度分散性较小,胶接性能更加稳定。

皮革材料在体育装备产业中的应用优势与前景分析

皮革材料以其优良的耐磨性、舒适性和耐用性而闻名,这些特性使其成为体育装备制造中备受青睐的材料之一。与其他合成材料相比,皮革材料具有更高的透气性和柔软性,可以提供更舒适的穿着体验,减少运动员在比赛或训练中的不适感。此外,皮革材料还具有优异的抗拉强度和抗撕裂性能,可以确保体育装备在长时间使用中保持稳定的性能,延长其使用寿命。本文探讨了皮革材料在体育装备产业中的应用领域、应用优势以及市场前景,旨在为相关产业提供参考和启示,促进体育装备领域的技术创新和可持续发展,推动行业向更高水平迈进。

基于故障树反演的复合材料成形生产线故障诊断

复合材料成形装备生产线因其复杂性和高度集成性,故障的产生可能涉及多个环节和因素,因此需要一种系统性的方法来准确地分析和定位故障源。本文梳理了复合材料产品制造过程中可能出现的故障类型和影响因素,构建了一个全面的复合材料成形装备产线故障树,借助故障树反演技术,将实际故障事件映射到故障树上,通过逆向推导,得出可能导致这些故障事件的基本故障事件,该方法在提高生产质量、降低故障风险方面具有重要意义,为复合材料制造领域的技术改进和创新提供了有力支持。